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  • 1

    NGN Focus Group

    Inje University , School of computer engineering ChulSoo Kim August. xy. 2005

    2

    1. Why do we need NGN? 2. NGN architecture 3. FGNGN 4. Case features 5. Future issues 6. Conclusions

    Contents

    125

  • 3

    Today Tomorrow

    Telephone network

    Mobile radio network

    IP-Network

    Multimedia Access - Advantages • easy to handle • reliable • mobile

    Internet

    1. Why do we need NGN?

    One network for everything

    4

    1. Why do we need NGN? (Cont)

    • Short Term objective: Create New Revenue possibilities – Removal of boundaries between voice and data opens the way to new

    kind of services – Can be realized relatively quickly with limited investments

    • Long Term objective: Realize Cost Savings – Simpler network – More efficient network – Cheaper network components – Full benefit only realized when all separate networks have fully migrated

    towards the target solution

    126

  • 5

    Driven by Cost Reduction

    Possibilities Driven by

    Revenue Increase Possibilities

    6

    Packet Network

    WAN UTRAN

    Mobile PSTN

    CO CableDSL

    Broadband

    WLL Access

    Edge

    Core

    Control

    Applications

    Management

    Content Media Gateway

    Management system

    Residential Users

    Remote Office/SOHOEnterprise Customers Mobile Users

    Softswitches

    Application Servers

    2. NGN architecture

    127

  • 7

    2. NGN architecture (Cntd)

    • A public packet-based communications network with the following characteristics: – layered architecture

    • Layers can evolve independently – open interfaces between the layers and all other networks

    • Best in class for each layer – seamless control of multiple transport technologies

    • Cost savings due to focused CAPEX and reduced OPEX – Centralized intelligence

    • Fast and efficient introduction of new services – Gateway interconnection far simpler than Exchange interconnection

    • New services — new revenues

    8

    • Functional & Nomadicity Architecture (base on IMS & non-IMS) • QoS (include the xDSL Access) • Security Capability (inc. Authentication) • NGN Control and Signaling Capability • Evolution from CGN to NGN

    NGN Focus Group • ITU-T Director launched NGN Focus Group at June 2004 • Almost every two month meeting : 6, 7, 9, 11/2004 and 2, 4, 6/2005

    Future Packet Network requirementsFPBN (Future Packet-based Network)

    WG7

    Evolution of Networks to NGN, PSTN evolution to NGNEvol (Evolution)WG 6

    NGN Security FrameworkSeC (Security Capability)WG 5

    TRQ.IP QoS.SIG.CS1CSC (Control & Signalling)WG 4

    TR-123.qos, TR-msnniqos, TR-NGN.qos, TR-NGN.NHNperf, TR-e2eqos.1, TR-enet, TR-atmipa, TR-racs, TR-ipaqos

    QoS (Quality of Services)WG 3

    Req. and Architecture, Functional Req. for NGN Mobility, Functional Req. for Soft Router

    FAM (Functional Architecture, and Mobility)

    WG 2

    NGN Scope, Releases 1 / General Requirements, Servie and Capability, Mobility Services and Capabilities

    SR (Service Requirements)WG 1

    DeliverablesAreaWG

    3. NGN Standardization

    128

  • 9 D2TBDFGNGN-OD-00044Customer Manageable IP Network2

    D2TBDFGNGN-OD-00043Functional Requirement for Soft Router

    2

    D11Q05FGNGN-OD-00042Functional Requirements for NGN Mobility

    2

    D11Q05FGNGN-OD-00035Requirements & Architecture for NGN2 D

    PRI2Q05TBDNGN general services and capabilities (release independent)

    1

    PRI2Q05TBDNGN general requirements (release- independent requirements)

    1

    D12Q05FGNGN-OD-00036NGN Release 1 general requirements 1 P11Q05TBDMobility Services & Capabilities1 D11Q05FGNGN-OD-00038Services & Capabilities1 D11Q05FGNGN-OD-00037NGN Scope1

    StatusReleaseTarget Date

    Current DraftTitleWG

    NGN Focus Group

    Deliverables on Service Requirements and Architecture

    3. NGN Standardization

    10 D1May ‘05FGNGN-OD- 00024

    Performance measurement and management for NGN (TR-pmm)

    3

    D1July ‘05FGNGN-OD- 00033

    A QoS Framework for IP-based access networks (TR-ipaqos)

    3

    D1July ‘05FGNGN-OD- 00031

    Resource and admission control sub-system (TR-racs)

    3

    P1July ‘05TBDA QoS control architecture for ATM-based IP access networks (TR-atmipa)

    3

    D1July ‘05FGNGN-OD- 00026

    A QoS architecture for Ethernet networks (TR-enet)

    3

    D1July ‘05FGNGN-OD- 00032

    Requirements and framework for end-to-end QoS in NGN (TR-e2eqos.1)

    3

    DRIFeb. ‘05FGNGN-OD- 00025

    Network performance of non-homogeneous networks in NGN (TR-NGN.NHNperf.).

    3

    DRIFeb. ‘05FGNGN-OD- 00045

    General aspects of QoS and network performance in NGN (TR-NGN.QoS)

    3

    D1Feb. ‘05FGNGN-OD- 00027

    Multi Service Provider NNI for IP QoS (TR- msnniqos)

    3

    D1Feb. ’05FGNGN-OD- 00010

    A QoS control architecture for Ethernet- based IP access networks (TR-123.qos)

    3

    NGN Focus Group 3. NGN Standardization

    Deliverables on Quality of Services

    129

  • 11

    PTBD3Q05TBDCandidate Technologies7 PTBD3Q05TBDHigh Level Architecture7 DTBD2Q05FGNGN-OD-00029Requirements7 DTBD4Q04FGNGN-OD-00028Problem Statement7

    D11Q05FGNGN-OD-00040PSTN Evolution to NGN6

    D11Q05FGNGN-OD-00039Evolution of Networks to NGN

    6

    DTBDTBDFGNGN-OD-00034NGN Security Framework5

    DTBDTBDFGNGN-OD-00030TRQ.IP QoS.SIG.CS14

    NGN Focus Group 3. NGN Standardization

    Deliverables on Signaling, Security, Migration and Future

    12

    A NGN is a packet-based network able to provide telecommunication services and able to make use of multiple broadband,

    QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies.

    It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and

    ubiquitous provision of services to users.

    Definition of NGN (Draft Rec.

    Y.2001)

    Target Standards Area

    Generalized Mobility Convergence btw. Fixed & Mobile

    Unrestricted Access Open Access I/F

    Separation Services with Transport Architecture and Open API

    QoS-enabled Transport

    Multiple-Broadband Manageable Broadband

    Definition & Features of NGN 4. Key Features

    130

  • 13

    Management

    Transport Adaptation

    Transport

    CDR

    Transport Resource / Policy Control Function

    TMGF

    SGF

    Transport Resource &

    Enforcement Functions

    Traffic Measurement

    Function

    PGF

    CCF

    T. Authentication &Authorization

    Function

    Mobility Support Function

    T.Network Access Control Function

    AMGF

    Terminal Function

    Access Relay Function

    Proxy Function

    Session & C

    all C ontrol

    Application CDR

    CDR

    CDR

    CDR

    CDR

    CDR

    S.Authentication & Authorization Function

    Application Gateway Function

    Application Server Function (may include own Authentication, Authorization and Accounting)

    Charging Collection Function (CCF)

    Media Resource Control Function MGCF?

    Session Control Function PGCF

    EMS

    NMS

    Session Control Proxy Function

    All lines of this type attach to the corresponding input line at the CCF within session & call control

    Scope of NGN

    N etw

    ork B order Other NGN

    other IP MM Network

    (e.g. IMS)

    PSTN/ISDN

    Internet

    Connection point

    T.Network Access Process Function

    Packet Transport Function

    Media Resource

    Processing Function

    T-1

    T-3T-20

    T-7

    T-4

    LS Function User Profile DB Function

    Registration Function

    T-6

    T-8

    T-9

    T-13

    T-12

    S-14

    T-11

    T-15

    T-16

    T-18

    S-1

    S-4

    S-9

    S-10

    S-11 S-12

    S-13

    S-17

    S-18

    A-1

    A-2

    Functional Architecture Model 4. Key Features

    14

    Customer Manageable Capability 4. Key Features

    Subscriber Management

    AAAAAA

    Remote Access SwitchRemote Access Switch

    Metro Switch Metro Switch

    NNIxUNIxUNIyUNIz NNIy NNIy

    C/M-Plane

    U-Plane

    Access Gateway Access

    Gateway

    Service Management/Call Center

    QoS/SLA Management

    Soft Switch Functions

    Service ControlService Control

    FCAPS Management

    Routing, Signaling, OAM

    Addressing, NamingAddressing, Naming

    Signaling, OAMSignaling, OAM

    Ingress LERIngress LER

    Edge BE RouterEdge BE Router

    Edge MCUEdge MCU

    L1/L2 NodeL1/L2 Node

    Core LSRCore LSR

    Core BE RouterCore BE Router

    Core Multicast NodeCore Multicast Node

    L1/L2 NodeL1/L2 Node

    Egress LER/GWEgress LER/GW

    Edge BE RouterEdge BE Router

    Edge MCU or GWEdge MCU or GW

    L1/L2 Node/GWL1/L2 Node/GW

    Vari